What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta and United Airlines are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of January 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$553 Cheap Flights from Louisville to Sydney in 2026

Q: What is the typical price of a round-trip flight between Louisville and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,583 to $1,748. The lowest price recently found on this route was $1,170.

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Find the cheapest flights from Louisville to Sydney

Round-trip

One-way

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Enter your travel dates to find the best prices.

3:30 pm - 7:55 am

SDF

SYD

25h 25m

2 stops

9:30 am - 8:00 pm

SYD

SDF

24h 30m

2 stops

$1,170United Airlines

Wed, Apr 1 - Wed, Apr 8

3:30 pm - 7:00 am

SDF

SYD

23h 30m

1 stop

11:50 am - 7:51 pm

SYD

SDF

24h 01m

1 stop

$1,265United Airlines

Fri, Feb 27 - Fri, Mar 6

2:05 pm - 9:05 am

SDF

SYD

27h 00m

2 stops

2:00 pm - 8:14 pm

SYD

SDF

22h 14m

2 stops

$1,269United Airlines

Fri, Feb 27 - Fri, Mar 6

3:30 pm - 7:00 am

SDF

SYD

23h 30m

1 stop

12:10 pm - 9:46 pm

SYD

SDF

25h 36m

2 stops

$1,270United Airlines

Fri, Feb 13 - Fri, Feb 20

9:15 am - 7:00 am

SDF

SYD

29h 45m

1 stop

11:50 am - 7:54 pm

SYD

SDF

24h 04m

1 stop

$1,273United Airlines

Thu, Jan 29 - Fri, Feb 6

3:15 pm - 9:05 am

SDF

SYD

25h 50m

2 stops

11:20 am - 10:13 pm

SYD

SDF

26h 53m

2 stops

$1,277United Airlines

Sat, Feb 14 - Wed, Feb 18

9:00 am - 9:05 am

SDF

SYD

32h 05m

2 stops

11:50 am - 7:51 pm

SYD

SDF

24h 01m

1 stop

$1,278United Airlines

Sat, Feb 14 - Wed, Feb 18

9:00 am - 9:15 am

SDF

SYD

33h 15m

2 stops

9:30 am - 10:39 pm

SYD

SDF

27h 09m

2 stops

$1,369United Airlines

Thu, Mar 19 - Sun, Apr 5

3:30 pm - 7:00 am

SDF

SYD

24h 30m

1 stop

9:30 am - 10:39 pm

SYD

SDF

51h 09m

2 stops

$1,387United Airlines

Thu, Mar 19 - Sun, Apr 5

3:30 pm - 7:00 am

SDF

SYD

24h 30m

1 stop

9:30 am - 10:39 pm

SYD

SDF

51h 09m

2 stops

$1,388United Airlines

Thu, Mar 19 - Sun, Apr 5

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Jun 9

SDF3:20 pmLouisville Intl

25h 40m

2 stops

SYD7:00 amSydney Kingsford Smith

Jun 17

SYD9:30 amSydney Kingsford Smith

23h 39m

2 stops

SDF7:09 pmLouisville Intl

$1,169

United Airlines

Apr 1

SDF3:30 pmLouisville Intl

25h 25m

2 stops

SYD7:55 amSydney Kingsford Smith

Apr 8

SYD9:30 amSydney Kingsford Smith

24h 30m

2 stops

SDF8:00 pmLouisville Intl

$1,170

United Airlines

Feb 27

SDF2:05 pmLouisville Intl

24h 55m

2 stops

SYD7:00 amSydney Kingsford Smith

Mar 6

SYD11:50 amSydney Kingsford Smith

24h 01m

1 stop

SDF7:51 pmLouisville Intl

$1,265

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

May 15

SDF7:55 pmLouisville Intl

21h 00m

1 stop

SYD6:55 amSydney Kingsford Smith

May 29

SYD12:00 pmSydney Kingsford Smith

19h 31m

1 stop

SDF5:31 pmLouisville Intl

$1,897

Qantas Airways

Jun 10

SDF7:43 pmLouisville Intl

21h 12m

1 stop

SYD6:55 amSydney Kingsford Smith

Jun 17

SYD12:00 pmSydney Kingsford Smith

19h 31m

1 stop

SDF5:31 pmLouisville Intl

$2,022

Qantas Airways

Apr 1

SDF6:23 pmLouisville Intl

21h 32m

1 stop

SYD6:55 amSydney Kingsford Smith

Apr 8

SYD12:00 pmSydney Kingsford Smith

21h 24m

1 stop

SDF7:24 pmLouisville Intl

$2,097

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 4/1

3:30 pm-7:55 am

2 stops25h 25m

Sydney Kingsford Smith

Wed 4/8

9:30 am-8:00 pm

2 stops24h 30m

$1,170

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 2/27

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Fri 3/6

11:50 am-7:51 pm

1 stop24h 01m

$1,265

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 2/27

2:05 pm-9:05 am

2 stops27h 00m

Sydney Kingsford Smith

Fri 3/6

2:00 pm-8:14 pm

2 stops22h 14m

$1,269

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 2/13

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Fri 2/20

12:10 pm-9:46 pm

2 stops25h 36m

$1,270

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 1/29

9:15 am-7:00 am

1 stop29h 45m

Sydney Kingsford Smith

Fri 2/6

11:50 am-7:54 pm

1 stop24h 04m

$1,273

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/14

3:15 pm-9:05 am

2 stops25h 50m

Sydney Kingsford Smith

Wed 2/18

11:20 am-10:13 pm

2 stops26h 53m

$1,277

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/14

9:00 am-9:05 am

2 stops32h 05m

Sydney Kingsford Smith

Wed 2/18

11:50 am-7:51 pm

1 stop24h 01m

$1,278

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

9:00 am-9:15 am

2 stops33h 15m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:39 pm

2 stops27h 09m

$1,369

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:39 pm

2 stops51h 09m

$1,387

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:39 pm

2 stops51h 09m

$1,388

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,142. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month June is also very affordable. Most momondo users find prices during this month for around $1,229.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Louisville to Sydney takes 23h 30m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of January 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (72% of total bookings). The next most popular airline is Delta (28%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $973	Free Cancellation	Rating 7.4 9,163 reviews		Search United Airlines flights
Delta	PriceFrom $979	Free Cancellation	Rating 7.9 8,048 reviews		Search Delta flights

Parramatta

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Katoomba

Wollongong

Randwick

Coogee

Manly

Lithgow

Cronulla

Leura

Penrith

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.